Variety traits

Clematis flower diameter

Clematis L.

Flower diameter is a key morphological trait of Clematis, used for cultivar classification and assessment of ornamental value. According to international standards, measurements are taken on fully opened flowers with sepals in a horizontal position.

In the reference 9 varieties crop Clematis, where this is mentioned in the description.

Standardized methods are used to assess Clematis flower diameter, requiring measurements in centimeters on typical, fully opened specimens. To ensure data accuracy, the sepals must be positioned horizontally during the measurement process.

In agronomic practice and breeding, a classification system is adopted that divides Clematis into three groups: small-flowered (from 2 to 4 cm), medium-flowered (from 4 to 10 cm), and large-flowered (from 10 to 20 cm or more). This grading serves as the basis for the DUS procedure, which determines the distinctness, uniformity, and stability of cultivars.

Flower size directly influences the application of the crop in landscape design and determines requirements for cultivation techniques. Large-flowered cultivars are prized for formal landscaping, yet often require more meticulous care, whereas small-flowered species are frequently characterized by greater hardiness.

General information about the subject — on the page Flower diameter.

Sources8

Varieties of Clematis mentioned in the description

Selection based on the description text, not on official evaluation: these data are absent from registers. For specific variety details, please refer to its profile.